A simple interface to create atomically accurate DNA models based on real gene sequence data. It allows the user to create data in a number of geometry types and update the rendered appearance of the DNA through variables like bond lengths, atomic elements, and molecular identities.

An open-source interactive visualization tool for traffic engineers, developed by NCSA and Argonne National Lab. When city planners model the flow of traffic through an urban road network, they use the results of their simulations to predict normal traffic patterns, ameliorate traffic delays due to road closures, and determine the best evacuation plans in case of emergency. Unfortunately, most tools to visualize the results of their simulations only show snapshots in time, rather than the dynamic flow of traffic. Metropolis allows engineers to look at and follow the individual "virtual vehicles" in a simulation, to view the traffic metrics on individual streets, and to pick out hotspots in an urban simulation. Metropolis is designed to work with output from TRANSIMS, a suite of simulation tools used for traffic planning worldwide. Download Metropolis

The Predictive Ecosystem Carbon Analyzer (PEcAn) allows researchers to run models such as the Ecosystem Demography and SIPNET over data obtained from a number of external sources in a manner that emphasizes and propagates uncertainties within the data. Download PEcAn

A collection of tools, utilities, and libraries for software performance analysis. This software can help point the way toward selecting other tools and/or techniques using more specialized software if necessary. Download Perfsuite